In reply to PebblePusher:
The best advice I can give is to go somewhere else - Gogarth is not a good venue for sub-VS climbers. There is stuff to do but not much and you won't be even close to getting the most out of it.
If you're dead set on the idea, I stayed one of the sites near Trearddur Bay once - I think it was Tyn Rhos - which was nice. Chilled atmosphere, nice site, quiet, friendly cat etc etc. Usually I just bivvy near the car park though, or drive over from Llanberis.